Introduction: Building Pykrete (bulletproof Ice)


if you are familiar to this, sorry in advance for any mistakes, if not here is a short explination of what pykrete is:

this is my first instructable so bare with me

i take no responsibility of what you do with this

Pykrete is a strange and wonderful thing invented in WW2 by a British inventor ad showcased to Churchill in his bathtub. Pykrete is a form of reinforced ice that has the stopping capability of a brick when a gun is fired at is remarkably fire resistant since it is basically ice. drawing were produced during WW2 for a giant aircraft carrier to be made out of this as it would be like an iceburg
i would say that this is composite material

relatively east to make you need:

Materials:

1 Container
2 Water
3 Wood Pulp (paper, sawdust, wood chips)
4 Freezer

Step 1: Mixing the Water and Wood Pulp

Take the Water and Wood Pup and mix it by weight to these percentages:

14% Wood Pulp ( in this case kitchen towel)
to
86% Water


so for example for 1 Kg of Pykrete Mix 140G Paper (any I Think) to 860G water



Mix Well






Put into suitable container


Stick in the freezer and leave to set

Step 2: Mix It Up Part 2

After about two to three hours if the Pykrete has not frozen yet give it a bit of a stir to make sure that it is all mixed corectly











Once it is Frozen take it out if its container and enjoy.

Step 3: Do What You Want With (Compare With Regular Ice)

I can't find any use for this yet but once you have made it. keep it is the freezer and use the same container to freeze dome water.

once that its done take them outside and compare the strength of each material.

Read this to find out more
http://en.wikipedia.org/wiki/Pykrete

but remember that i take no responsibility of what you do with this

P.s Would have had pictures of testing but got dark

Comments

author
0_h3xx_0 made it!(author)2016-07-20

This would make an excellent frozen medium for the 5 gallon Bucket AC. Mix it up, and put it into ziplock bags. Then just hot glue them shut for permanent icepacks that last 2-3 times longer than regular ice.

author
LeeM5 made it!(author)2014-11-18

You could make containers of this that would fit in the freezer if you were expecting a power loss. For example a hurricane heading your way. You would keep some of them in the freezer and some of them in the refrigerator. Seeing as they melt a lot slower it might save the contents of the refrigerator.

author
Hades+di+Angelo made it!(author)2010-01-24

does this work

author
TechDante made it!(author)2010-01-24

yes it does. and you can build a boat from it as proven by teh mythbusters recently

author
Foaly7 made it!(author)2010-04-22

Yeah, but the boat would melt if you aren't in the Arctic.

author
DragonJava%E2%99%85 made it!(author)2014-07-27

Actually it wouldn't as pykrete does not melt near as quickly as regular frozen H2O, in fact I believe it melts about 2 or 3 times slower than normal ice

author
TechDante made it!(author)2010-04-27

no plan was to have an aircraft carrier built out of it. it didnt go through because it would have been two expensive to run the coolers to keep the stuff frozen over long periods of time

author
tinker234 made it!(author)2011-08-20

wonder if i could rig a suit for artic climates that runs the stuff through a clear plasstic layer

author
zascecs made it!(author)2010-03-18

Just think of a snowball made out of this. Ouch!

author
snowpenguin made it!(author)2009-05-06

You really should use some grammar, especially in your Instructables, because the only part of what you wrote that I understood was 14 to 86 percent. People really don't like to have to read like that.

author
TechDante made it!(author)2009-07-01

i know, sorry was and still is my first instructable. plus i have never been any good with spelling and grammar

author
tankhowland made it!(author)2009-12-17

 ya didnt bother me at all
and i found this pykrete very intresting

author
cyberpageman made it!(author)2009-12-07

 I found the description perfectly clear, plus the author apologized in advance for any errors.  And, if you will excuse me for saying this, your writing is not the epitome of clarity.

author
ClemensY290 made it!(author)2007-11-23

this was "invented" to make a giant aircraft, but no it wasn't to fire freezing water at enemy planes, it was made for a unsinkable, missile/motor/bomb "proof" aircraft carrier that could move through the Atlantic without sinking when it hit a ice burg and yes it would make a nice potato gun projectile I have already done it and i had destructive results

author
JeremyA made it!(author)2008-05-15

I didn't say that it was specifically for firing freezing water I simply said that it could. It was made for making a huge aircraft carrier that could withstand the wolf pack attacks in the Atlantic. Geoffrey Pike was the inventor he's neat look him up.

author
Roflolommo made it!(author)2009-09-09

geoffrey pyke not pike hense the pykrete

author
Foehammer358 made it!(author)2009-08-21

I'm planning to make a wall of this to protect my quinzee this winter :D

author
ILIKEPIE333 made it!(author)2009-03-03

you could also use wood shavings did you see this on a show on the history channel? If so, I have also seen it

author
TechDante made it!(author)2009-03-19

no i saw this in the uk on a show called Brainiac History Abuse (only ran for 1 season) and in a magazine call Fortean Times (not sure what issue)

author
sharlston made it!(author)2009-06-07

do u live in the uk? and how long does it take to melt?

author
ILIKEPIE333 made it!(author)2009-03-19

saw it on G4

author
dombeef made it!(author)2009-04-10

G4 Rules!

author
ILIKEPIE333 made it!(author)2009-03-19

Braniac rules!

author
crayzclown1 made it!(author)2009-03-23

ill try this with my .357 magnum

author
crayzclown1 made it!(author)2009-03-23

and a .22 rifle

author
crayzclown1 made it!(author)2009-03-23

and a shotgun

author
arcadiasr made it!(author)2009-03-17

I was wondering how heavy pykrete is?

author
TechDante made it!(author)2009-03-19

its as heavy as water as that is the key ingredient. hope this helps

author
ILIKEPIE333 made it!(author)2009-03-03

they tested it out in the northern US( maybe Canada, IDK?) They made a smaller model but it was scrapped before they completed the testing that kinda sucks cause it would have been awesome to see a huge floating aircraft carrier made of ice the only soverein US territory made completely of ice

author
elitehaxor made it!(author)2008-10-25

u should mix some gelatin with it

author
cateyesko made it!(author)2008-05-05

I have been trying to find a way to keep my dogs water cool outside. I tried plain water in 2liter bottles. Melted in less than two hours. I remembered seeing this on Discovery or one of those channels. I am going to try it!

author
JeremyA made it!(author)2008-05-02

I never implied that it was designed to fire freezing water. I simply said it was capable of firing freezing water.

author
pls made it!(author)2008-04-11

i looked up knex, and got ice?

author
backyardpyro217 made it!(author)2008-03-06

man ill tell ya if that wasnt so stiff and it didnt melt that would make a PERFECT bullet proof vest... except it would probably be cold.

author
JeremyA made it!(author)2007-10-18

The uses for pykrete are pretty neat. For instance since it takes for ever to thaw you can freeze some in bottles and put it in your freezer or refrigerator to keep the units from having to work as hard to keep the temperature down. Use it along with some of the home made air conditioners on this site to have a long lasting cooling medium. Maybe try using it for laptop cooling. Be creative. On another note Pykrete was initially developed for a project called "project Habukuk" (sp?) were a humongous air craft carrier was built that could actually fire freezing water at enemy craft. The uncle John's bathroom reader series has a good write up on Pyke. He had many good ideas although he unfortunatly killed himself after the war.

author
vcw made it!(author)2008-01-22

Well, the humid would be bad for computers, :\

author
chron made it!(author)2007-11-07

On the flip side, what about making a projectile from this stuff for a "potato cannon". :-)

author
Drewzer667 made it!(author)2007-11-03

Awsome! cant brak with a bb gun. great target. thx for making

author
JeremyA made it!(author)2007-10-18

Also thank you for posting this I have been wanting to make some for some time.

author
TechDante made it!(author)2007-10-18

no problem i like the idea about laptop cooling

author
Bright+Shadow made it!(author)2007-10-11

these make good targets for bb/airsoft/knex/real guns

author
Bright+Shadow made it!(author)2007-10-11

Oh! I saw this on the History Channel! this guy took a sledgehammer to some pykrete, and a small chip barely came off!

author
Kaiven made it!(author)2007-10-09

that's a cool thing

author
Whaleman made it!(author)2007-10-09

cool. I don't know what I would do with it, but cool.

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